feat(studio): a phone's header folds into one button, the open ruler no longer rides the photo

docker/frontend/src/i18n/en.ts

@@ -13,6 +13,7 @@ export const en: Dict = {
   // The phone's way back from a tab's strip to the rail that opened it.
   'nav.tabs': 'TABS',
   'nav.back': 'Back to home',
+  'nav.menu': 'MENU',
   'nav.guest': 'Guest',
 
   // The install offer (see vi.ts).

docker/frontend/src/i18n/vi.ts

@@ -18,6 +18,9 @@ export const vi = {
   'nav.admin': 'Quản trị',
   'nav.photos': 'Ảnh của tôi',
   'nav.profile': 'Hồ sơ',
+  // The phone's one button in the header's corner: every control the bar
+  // carries, folded into a panel under it (see TopBar).
+  'nav.menu': 'MENU',
   'nav.library': 'THƯ VIỆN',
   'nav.studio': 'Studio',
   'nav.guest': 'Khách',